jaybird, I think you're dealing with good old fashioned hangovers. http://forum.brewerfan.net/images/smilies/wink.gif I remember taking prescription pain-killers a long time ago, and I'd experience the same thing. First, I wouldn't sleep. Then, when I did, I'd need a full nine hours, or I'd feel exactly how you described. That's not convenient when you only have time for seven hours of sleep. Anyway, while I'd submit that it's probably better to use Tylenol PM for pain rather than as a sleep aid, my suggestion would be to try taking a smaller dose. As far as Scooter1027's message? while being a doctor of pharmacy is plenty to confirm the accuracy of his post, I can also confirm what he says from a patient's point of view. About four years ago, I was suffering from pretty significant back pain for which I was prescribed Vicodin (Codeine plus Tylenol). Along with the Vicodin, I was instructed to take whatever Tylenol I needed to get a maximum daily dose. The amount of Tylenol I took was determined by the amount of Vicodin I needed on a given day. Complicating all this was the fact that my back pain occurred in the middle of the SARS scare. While not all that many people had SARS, lots of people were getting ill with some kind of cold/flu at the time. The point of all this is that while I was waiting an hour at the clinic's pharmacy for my back prescription to be filled, I caught whatever illness everyone else at the clinic and pharmacy had. So I ended up with Codeine cough syrup, too. (The cough syrup didn't contain Tylenol.) The bottom line is that I had to 'keep score' every day. The amount of Codeine I ate or drank varied; I rarely took the maximum allowable in a given day. Most significantly, the doctor and pharmacist were much more concerned about how much Tylenol I took than how much Codeine I ingested. Basically, I had to keep notes whenever I took anything, so I could keep the amount of Tylenol I took in check.